S弯进气道隐身设计中弯度参数研究

摘要/Abstract

摘要：

进气道是飞行器头向重点姿态角域内的强散射源．雷达散射截面减缩方法之一是将进气道设计成S弯形，以增加电磁波在进气道内反射次数，减少后向回波．在微波暗室内对系列S弯进气道进行了测试，研究上下弯折和水平弯折的进气道相对弯度对S弯形进气道散射的影响．实验结果表明，垂直极化下头向雷达散射截面均值随弯度呈“W”形变化，有两个极小值;水平极化下两种弯折方式头向雷达散射截面均值变化趋势差异较大，上下弯折时呈“W”形变化，水平弯折时单调降低．总体而言，适当的相对弯度可以较好地降低进气道的后向雷达散射截面．

关键词: 进气道, 雷达散射截面, 电磁散射, 隐身

Abstract:

The inlet is a strong scattering source in the aircraft head important attitude angle. One way to reduce RCS (Radar Cross Section) is to make the inlet S-shaped to increase the electromagnetic wave reflection time to reduce backward wave energy. A series of S-shaped inlets bended vertically and horizontally are tested in the microwave anechoic chamber to study relative curvature's influence. Experimental result shows that when the incident is vertically polarized, the head direction RCS average's variation along the relative curvature is of “W” shape and has 2 minimum values; when horizontally polarized, the head direction RCS average's variation is different in two bend fashions. The variation is of “W” shape when vertically bended and monotonously descends when horizontally bended. Generally speaking, a proper relative curvature can reduce the backward's RCS of the inlet.

Key words: inlet, radar cross section, electromagnetic scattering, stealth

中图分类号:

V218

姬金祖;武哲;刘战合. S弯进气道隐身设计中弯度参数研究[J]. J4, 2009, 36(4): 746-750.

JI Jin-zu;WU Zhe;LIU Zhan-he. Research on the curvature parameter in the S-shaped inlet's stealth design[J]. J4, 2009, 36(4): 746-750.

参考文献

［1］阮颖铮. 雷达截面与隐身技术［M］. 北京: 国防工业出版社, 1998.
［2］Knott E F. Radar Cross Section［M］. Dedham: Artech House Inc, 1985.
［3］Ruck G T. Radar Cross Section Handbook［M］. New York: Plenum Press, 1970.
［4］雷升, 张麟兮, 胡楚峰. 宽带扫频RCS自动测量系统［J］. 电子测量技术, 2007, 30(7): 128-131.
Lei Sheng, Zhang Xilin, Hu Chufeng. Wide Band Sweep RCS Automatic Measuring System［J］. Electronic Measurement Technology, 2007, 30(7): 128-131.
［5］石磊, 郭荣伟. 蛇形进气道的电磁散射特性［J］. 航空学报, 2007, 28(7): 1296-1301.
Shi Lei, Guo Rongwei. Electromagnetic Scattering Characteristics of Serpentine Inlet［J］. Acta Aeronoutica et Astronautica Sinica, 2007, 28(5): 1296-1301.
［6］万顺生, 罗屹洁, 郭荣伟. 采用SBR法研究飞机进气道的雷达散射截面［J］. 航空动力学报, 2006, 21(6): 1033-1036.
Wan Shunsheng, Luo Qijie, Guo Rongwei. Research on RCS of Airplane Duct Based on SBR Method ［J］. Journal of Aerospace Power, 2006, 21(6): 1033-1036.
［7］郭文彦, 朱颜镇, 李海涛. 飞机进气道的高频电磁散射特性及RCS 计算［J］. 哈尔滨工业大学学报, 1999, 31(1): 123-129.
Guo Wenyan, Zhu Yanzhen, Li Haitao. HF Electromagnetic Scattering Properties and RCS Calculation of the Airplane's Inlet［J］. Journal of Harbin Institute of Technology, 1999, 31(1): 123-129.
［8］高飞, 马凤国, 张红霞. 利用复射线法分析腔体的散射场［J］. 电波科学学报, 2000, 15(2): 244-247.
Gao Fei, Ma Fengguo, Zhang Hongxia. Analysis of Cavity Scattering Based on Complex Rays Method［J］. Chinese Journal of Radio Science, 2000, 15(2): 244-247.
［9］余安远, 郭荣伟, 孙姝, 等. 三种不同的进气道与弹体组合体雷达散射截面特性［J］. 南京航空航天大学学报, 2002, 34(6): 517-521.
Yu Anyuan, Guo Rongwei, Sun Shu, et al. Radar Cross Section Characteristics of Three Different Inlet-Body Missile Models［J］.Journal of Nanjing University of Aeronautics ＆ Astronautics, 2002, 34(6):517-521.
［10］韩东, 郭荣伟, 谭惠俊, 等. 一种直升机进气道方案的电磁散射特性［J］. 航空动力学报, 2002, 12(5):527-532.
Han Dong, Guo Rongwei, Han Huijun, et al. Experimental Study of RCS for a Helicopter Inlet［J］. Journal of Aerospace Power, 2002, 12(5): 527-532.
［11］韩东, 郭荣伟, 易海云, 等. 一种直升机进气道电磁散射减缩方案实验研究［J］. 航空动力学报, 2004, 19(2): 229-232.
Han Dong, Guo Rongwei, Yi Haiyun, et al. Experimental Study of RCS Reduction for a Helicopter Inlet［J］. Journal of Aerospace Power, 2004, 19(2): 229-232.
［12］廖伟, 郭荣伟. 直管斜切式方转圆进气道的电磁散射特性及抑制技术的实验研究［J］. 航空学报, 1999, 20(3): 205-210.
Liao Wei, Guo Rongwei. Experimental Research of RCS and RCSR of a Straight Rectangle-to-Round Scoop inlet［J］. Acta Aeronoutica et Astronautica Sinica, 1999, 20(3): 205-210.
［13］Pathak P H, Burkholder R J. A Reciprocity Formulation for the EM Scattering by an Obstacle within a Large Open Cavity［J］. IEEE Trans on Microwave Theory and Techniques, 1993, 41(4): 702-707.
［14］Hu F G, Wang C F, Gan Y B. Efficient Calculation of Interior Scattering From Large Three-Dimensional EC Cavities［J］. IEEE Proceedings of Antennas and Propagation, 2007, 55(1): 167-177.
［15］Jin J M, Ni S S, Lee S W. Hybridization of SBR and FEM for Scattering by Large Bodies with Cracks and Cavities［J］. IEEE Trans on Antennas and Propagation, 1995, 43(10): 1130-1139.

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